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Filing metadata

Accession number: 0001179110-04-013471
Form type: Form 3
Filer: IMMUNOGEN INC
CIK: CIK 855654
Filed: Jun 21, 2004
Reporting period: Jun 17, 2004
Description: Initial ownership

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0001179110-04-013471-index.htm

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0001179110-04-013471.txt

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